f53df7da64
Code submissions have continually suffered from formatting inconsistencies that constantly have to be addressed. Using clang-format simplifies this by making code formatting more consistent, and allows automation of the code formatting so that maintainers can focus more on the code itself instead of code formatting.
157 lines
3.6 KiB
C
157 lines
3.6 KiB
C
/*
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* Copyright (c) 2015 John R. Bradley <jrb@turrettech.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "ff-packet-queue.h"
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#include "ff-compat.h"
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bool packet_queue_init(struct ff_packet_queue *q)
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{
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memset(q, 0, sizeof(struct ff_packet_queue));
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if (pthread_mutex_init(&q->mutex, NULL) != 0)
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goto fail;
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if (pthread_cond_init(&q->cond, NULL) != 0)
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goto fail1;
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av_init_packet(&q->flush_packet.base);
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q->flush_packet.base.data = (uint8_t *)"FLUSH";
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return true;
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fail1:
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pthread_mutex_destroy(&q->mutex);
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fail:
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return false;
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}
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void packet_queue_abort(struct ff_packet_queue *q)
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{
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pthread_mutex_lock(&q->mutex);
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q->abort = true;
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pthread_cond_signal(&q->cond);
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pthread_mutex_unlock(&q->mutex);
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}
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void packet_queue_free(struct ff_packet_queue *q)
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{
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packet_queue_flush(q);
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pthread_mutex_destroy(&q->mutex);
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pthread_cond_destroy(&q->cond);
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av_free_packet(&q->flush_packet.base);
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}
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int packet_queue_put(struct ff_packet_queue *q, struct ff_packet *packet)
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{
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struct ff_packet_list *new_packet;
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new_packet = av_malloc(sizeof(struct ff_packet_list));
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if (new_packet == NULL)
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return FF_PACKET_FAIL;
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new_packet->packet = *packet;
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new_packet->next = NULL;
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pthread_mutex_lock(&q->mutex);
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if (q->last_packet == NULL)
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q->first_packet = new_packet;
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else
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q->last_packet->next = new_packet;
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q->last_packet = new_packet;
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q->count++;
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q->total_size += new_packet->packet.base.size;
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pthread_cond_signal(&q->cond);
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pthread_mutex_unlock(&q->mutex);
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return FF_PACKET_SUCCESS;
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}
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int packet_queue_put_flush_packet(struct ff_packet_queue *q)
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{
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return packet_queue_put(q, &q->flush_packet);
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}
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int packet_queue_get(struct ff_packet_queue *q, struct ff_packet *packet,
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bool block)
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{
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struct ff_packet_list *potential_packet;
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int return_status;
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pthread_mutex_lock(&q->mutex);
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while (true) {
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potential_packet = q->first_packet;
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if (potential_packet != NULL) {
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q->first_packet = potential_packet->next;
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if (q->first_packet == NULL)
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q->last_packet = NULL;
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q->count--;
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q->total_size -= potential_packet->packet.base.size;
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*packet = potential_packet->packet;
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av_free(potential_packet);
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return_status = FF_PACKET_SUCCESS;
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break;
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} else if (!block) {
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return_status = FF_PACKET_EMPTY;
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break;
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} else {
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pthread_cond_wait(&q->cond, &q->mutex);
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if (q->abort) {
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return_status = FF_PACKET_FAIL;
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break;
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}
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}
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}
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pthread_mutex_unlock(&q->mutex);
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return return_status;
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}
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void packet_queue_flush(struct ff_packet_queue *q)
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{
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struct ff_packet_list *packet;
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pthread_mutex_lock(&q->mutex);
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for (packet = q->first_packet; packet != NULL;
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packet = q->first_packet) {
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q->first_packet = packet->next;
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av_free_packet(&packet->packet.base);
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if (packet->packet.clock != NULL)
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ff_clock_release(&packet->packet.clock);
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av_freep(&packet);
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}
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q->last_packet = q->first_packet = NULL;
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q->count = 0;
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q->total_size = 0;
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pthread_mutex_unlock(&q->mutex);
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}
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